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CVE-2022-48939

3.3 · LOW

In the Linux kernel, the following vulnerability has been resolved: bpf: Add schedule points in batch ops syzbot reported various soft lockups caused by bpf batch operations.

Published Aug 22, 2024CWE-834EPSS 0.20%

Overview

CVE-2022-48939 is a low-severity vulnerability. It was published on August 22, 2024 and has a CVSS 3.1 base score of 3.3 (LOW).

This vulnerability has a CVSS 3.1 base score of 3.3, rated LOW. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

Technical description

In the Linux kernel, the following vulnerability has been resolved:

bpf: Add schedule points in batch ops

syzbot reported various soft lockups caused by bpf batch operations.

INFO: task kworker/1:1:27 blocked for more than 140 seconds.

INFO: task hung in rcu_barrier

Nothing prevents batch ops to process huge amount of data,

we need to add schedule points in them.

Note that maybe_wait_bpf_programs(map) calls from

generic_map_delete_batch() can be factorized by moving

the call after the loop.

This will be done later in -next tree once we get this fix merged,

unless there is strong opinion doing this optimization sooner.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

Refgit.kernel.org/stable/c/75134f16e7dd0007aa474b281935c5f42e79f2c8Refgit.kernel.org/stable/c/7e8099967d0e3ff9d1ae043e80b27fbe46c08417Refgit.kernel.org/stable/c/7ef94bfb08fb9e73defafbd5ddef6b5a0e2ee12bRefgit.kernel.org/stable/c/8628f489b749a4f9767991631921dbe3fbcdc784

How CyberStrike helps

Frequently asked questions

What is CVE-2022-48939?

CVE-2022-48939 is a low-severity vulnerability. It was published on August 22, 2024 and has a CVSS 3.1 base score of 3.3 (LOW).

How severe is CVE-2022-48939?

This vulnerability has a CVSS 3.1 base score of 3.3, rated LOW. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2022-48939?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2022-48939?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2022-48939 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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